## Introduction

The adjustment tools complete each other and interact. With a view to avoid the conflicts between the various adjustments or to limit the meshing overcharges, certain priority rules are established in the software.

The table below describes the order of the operations made by Flux during the meshing stages carried out by the user (mesh lines à mesh faces à mesh volumes):

Phase Description
1 Mesh lines :
1a The mesh points and mesh lines impose the density of the mesh on the points and lines.
1b The line relaxations impose a relaxation of the meshing of the lines. This relaxation is applied at the interior of the domain as far as possible: If a line carries a discretization line or if it carries a distribution of nodes that cannot leave space to a relaxation, then there is no relaxation.
2 Mesh face :
2a The mesh generators impose the meshing on the faces.
2b The surface relaxation impose a relaxation on the face meshing. This relaxation is applied at the interior of the domain as far as possible: if a face carries a mesh generator different from the Automatic type mesh generator, then there is no relaxation. .
2c Shadowing overmeshes the close faces if necessary.
Note: the surface meshing can impact on the linear meshing.
3 Mesh volume :
3a The mesh generator imposes the meshing in the volumes.
3b The volume relaxations impose a relaxation of the meshing of volumes. This relaxation is applied at the interior of the domain as far as possible: if a volume carries an extruded meshing, then there is no relaxation.

## Priorities of lines over points

When mesh information is assigned to both lines and points, mesh lines have priority over mesh points.

Example :

• Points P1, P2, P3 and P4: length of line elements next to points: 2 mm
• Line Lz: geometric progression of the line elements on the line:
• minimum distance: 1 mm
• ratio : 1.5
• Result:
• on line Lx and Ly: division based on P1, P2 and P3 points information
• on line Lz: division base on the line information